Mold for concrete columns or the like.



PATENTED JUNE 6, 1905.

' "L. SGHULLER. MOLD FOR CONCRETE COLUMNS OR THE LIKE.

' APPLIGATION PILED'IEB.27. 1905.

No. 791,585. 1 PATENTED JUNEB, 190 5.

" L. SGHULLER.

' MOLD FOR CONCRETE COLUMNS OR THE LIKE.

APPLICATION FILED FEB. 27. 1995.

a annals-42mm z.

. No. 791,585 PATENTED JUNE 6, 1905. 1 v LSGHULLER.

MOLD FOR CONCRETE COLUMNS OR THE LIKE.

APPLIQATION FILED FEB. 27. 1905.

3 SHEETSSHEET 3.

UNITED STATES Patented June 6, 1905.

PATENT OFFICE.

M OLD FOR CONCRETE COLUMNS OR THE LIKE- SPEGIFIGATION formingpart ofLetters Patent No. 791,585, dated June 6, 1905.

Application filed. February 27, 19%. Serial No. 247,512. I

To all whmn it may concern:

Be it known that I, LAWRENCE SGHULLER, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Molds for ConcreteColumns or the Like, of which the following is a'specification. I

My invention relates to apparatus employed in the erection of concreteposts," columns, walls, and similar structuresmore specifically stated,being in the nature of a mold for use in the erection of suchstructures.

The main object of my invention is to provide asimple and inexpensiveapparatus which may serve to support and confine the concrete or otherplastic material-as it is inserted and packed in place during thebuilding of the structure and the principal element of which may bereadily removed for reuse in connection with subsequent structures.

My invention pertains, generally speaking,

to that class of mold apparatus wherein certain minor parts are embodiedin the structure itself and become permanent parts thereof, theprincipal parts, however, being removable for subsequent use.

Generally stated, my. invention comprises a skeleton frame polygonal incross-section and provided at its angles or corners with uprights whichbecome permanent parts of the finished structure and which presentexteriorly-finished surfaces in the nature of corner-beads and alsoprovide on either vertical edge of the latter outwardly-convergent lips,forming thereunder dovetailed grooves adapted to interlockingly engagethe edges of the movable side plates, each of said side platescomprisinga'pair of vertically-extending leaves hinged together at their adjacentmar- I gins so as to be capable by the bending andstraightening of theleaves at their hinges to be readily inserted into and removed fromoperative position.

My invention will be fully understood when considered in connection withthe accompanying drawings, which illustrate a preferred mechanicalembodiment thereof, andin which Figure 1 is an elevational perspectiveview,

broken off at its upper end, of my improved apparatus. Fig. 2 is asimilar view of a partially-constructed column with the side platesomitted, and Fig. 3 is a cross-sectional view through the structureshown in Fig. 1.

Referring tothe drawings, 5 designates each of a series of uprightcorner-posts, preferably of the substantial T-form herein illustrated,

the outer surfaces of the heads being preferably rounded, as shown at 5,to present a neat and finished appearance. The inwardlyextendingportions or webs of said posts are securely united by strips or bars 6,secured, as by bolts 7 to and between adjacent webs, said cross-barsbeing placed at suitable intervals between the top and bottom of thestructure, as shown in Fig. 2, to insure the accurate positioning andrigidity of the cornerposts. "Said cross-bars may be connected bydiagonal braces 8, secured thereto, as by bolts 9, and serving to squarethe frame. Within and substantially centrally of the frame thus formedmay be erected for the greater strength and stability of the column,where required or necessary, additional steel framing, such as shown at10, this latter feature being common in molded columns of this class andconstituting no essential part of my present invention.

The removable side plates of my invention comprise each a pair ofvertical leaves 11, which are united at their adjacent edges in such amanner as to befoldable by hinges 12. The outer margins of said leavesare beveled, as shown at 11", to adapt said leaves to have dovetailedengagement with the inner surfaces 'of the heads of the corner-posts,said beveled margins entering the internal angles 5 formed between theinner surfaces of the heads and the adjacent surfaces of the webs of thecornerposts. When said side plates have been inserted, the leaves 11thereof are straightened, so as together to present a flat planesurface,

as shown at the left and under sides of Fig. 1

3, and to retain them in such position I may employ any suitable lockingmeans, that herein shown consisting of a bar 13, riveted to the outerface of one of the leaves and adapted to overlie the outer face of theother, in association with a suitable staple on said other leaf, hereinshown as comprising a pair of apertured lugs 14:, between which the barenters when the leaves are straightened, and a keeper pin or bolt .15,attached with necessary freedom of movement to the bar, as by a chain16, and adapted to enter the apertures of said lugs behind said bar.

In the operation of my invention the skeleton metal frame is firsterected, and the side plates are then applied thereto by bending thesame at their hinged margins, as indicated at the upper side of Fig. 3.sufficiently to permit the beveled outer edges of the leaves 11 to enterthe internal angles 5 of the cornerbeads, whereupon by straighteningsaidleaves said plates and corner-beads are brought into snug engagement andretained therein by the bars 13 and keeper-pins 15, as plainly shown inFig. 1. The wet concrete or other plastic agglomerate is then filled inand allowed to harden and set, after which the side plates may bereadily removed by withdrawing the locking-pins 15 and bending theleaves of said plates sufficiently topermit their retraction from thedovetailed grooves of the frame in an obvious manner.

In practice the side plates may either be made the full height of thecolumn to be erected or they may be made of any convenient height lessthan the full height of the column and be loosened and adjusted upwardlyas successively-superimposed portions of the column are hardened, thislatter method being common practice in the erection of concretestructures of this nature and constituting no part or feature of thepresent invention.

It should be stated that the polygonal skeleton frame consisting of thecorner-posts 5, tie-bars 6, and braces 8 are not designed as essentialstrength giving elements of the structure, although they necessarilybecome permanent parts of the latter; but their principal function is toserve, in cooperation with the hinged side plates, as elements of themold, although the outer surfaces of the heads of the corner-postspossess an important incidental feature as corner strips or beads,giving to the column a neat and finished appearance and providingtherein corners not liable to become injured or defaced. In practiceafter the side plates have been removed the space previously occupiedthereby is preferably filled in with an external coping of cement orplaster made flush with the outer surface of the corner-beads, asindicated at 17 on the right of Fig. 3.

It is evident that the special formation and construction of thecorner-posts and hinged leaves 11 of the side plates herein shown anddescribed is not of the essence of the invention so long as saidelements are provided with interengaging parts which cooperate when theside plates are straightened and locked to hold said plates securely inposition against the outward pressure of the filled-in material. Forpractical purposes, however, corner-plates of generally T formcooperating with side plates having beveled outer margins which engagebeneath the heads of said T-irons constitute the preferred construction.

I claim- 1. A mold for concrete columns and the like, comprising askeleton structure including a plurality of interconnected uprights, anda plurality of removable hinged side plates, said uprights and said sideplates being provided with interlocking parts brought into cooperationby straightening said hinged plates between adjacent uprights,substantially as described.

2. A mold for concrete columns and the like comprising a skeletonstructure including a plurality of interconnected uprights having theirouter portions formed with convergent marginal lips, in combination witha plurality of removable hinged side plates, the outer margins whereofare adapted to underlie and interlock with the said lips of the uprightswhen said plates are straightened to thereby form the side walls of themold, substantially as described.

8. A mold for concrete columns and the like comprising a skeletonstructure polygonal in cross-section and including a plurality ofinterconnected uprights at the corners thereof, said uprights havingtheir outer portions formed to present external corner-surfaces for thefinished column and also convergent marginal lips, in combination with aplurality of removable hinged side plates, the outer margins whereof areadapted to underlie and interlock with said lips of the uprights whensaid plates are straightened to thereby form the side walls of the mold,substantially as described.

4:. A mold for concrete columns and the like comprising a skeletonstructure polygonal in cross-section and including a plurality ofinterconnected T members at the corners thereof, the heads whereofconstitute corner-bezuls of the finished structure, in combination witha plurality of removable hinged side plates, the outer margins whereofare adapted to underlie and interlock with the heads of said T- ironswhen said plates are straightened, to thereby form the side walls of themold, substantially as described.

5. A mold for concrete columns and the like comprising a skeletonstructure polygonal in cross-section and including a plurality ofinterconnected T-irons at the corners thereof, the heads whereofconstitute corner-beads of the finished structure, in combination with abetween, and means for locking said leaves plurality of removable sideplates, each comin straightened position, substantially as deprising apair of leaves hinged together at 'scribed.

their adjacent vertical margins and having LAWRENCE SOHULLER. 5 theiroutermargins suitably beveled to under- Witnesses:

lie and interlock'with the heads of adjacent EMANUEL N. POND,

T-irons when said plate is straightened there- FREDERICK C. GoopwrN.

